<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Vue2.6</title>
  </head>
  <body>
    <div id="app" style="color: red; font-size: 18">
      app
      <div class="wrap">
        <span>姓名:{{testStr}}999999999</span>
      </div>
    </div>
  </body>
</html>
